Electric-fuse cut-out.



E, J. GBBS.

ELECTRIC FUSE GUT-OUT.

APPLIUATXON FILED JAN. 27, 191s.

'www4/remo UNITED STATES -EARL" J'. GIBBS, 0F EVANSVILLE, WISCGNSIN, .LSSIGNOR DF SNE-ELF TG EDWIN' PATENT nennen,

Specification of Letters Patent.

file-tente@ July itil 4l.

A` plioation tiled .T anury, 19H5. Serial lo. M4523.'

usefull'Improvements in Electric-F use Cut Outs; and I do deelaiethe followin to be a full, 'elearand exact description o the in vention, such as' will enable others skilled in 'fC-the art to which it appertainssto mnlte'and use the same.

This invention relates vto 'junction boxes, and more especially to those which include thermal cut-outs; and the object of the same is to construct a fuse box capable of contaiin ing two fuses for high tension wires, and Abetween them a switch mechanism consisting preferably of a rotatable plate of insulating material, rso that when one fuse is burned out said mechanism maybe turned to cut out A this fuse and to cut in or switch in the other fuse-therebybringing an insulating plate 1 between the live fusesnd the bored ends or terminals of thefline Wires and the dead fuse which is Yto be replaced by n new one and which requires the' insertion of the operators hand. This object is carried ont inthe manner illustrated in the aompsnying d awinggs and described in the following specification atx/d claims.

In smid drawines--Figu'ie l is a tra-ns vel-'se vertical section through the box or easing- ,nud a front' elevation of the meehenism comprising one form of my invex'ition; und Figs.' 2, 3, and 4 are sections on the lines 2-'-2, 3 3, and 4 4, respectively, of Fig. 1. The boxer easing' B has n hinged door D and -is of a, size to contain vthe mechanism hereinafter described and two ordinary thermal fuses F, herein illustrated as of that type which have bored terminals T at their extremities which in common use are slipped between the arms of forked connectors by rnuns of/vhich the fuses are eut into the line where they are to be' employed. When high tension or anl osterload is thrown onto this line, the fuse burns ont, by which is meant that the fuse Wire contained Within the insulating or fiber shell of the fuse F is melted; hence the current isinterrued and it becomes necessary to replace this fi se with another.

V The purpose of the present invention is to permit ythe operator 'to throw' Jthe switch mechanism from a position outside the hex "struction best illus-tinted i or casing, so that immediately he cuts out the deed fzuse and ents in live onmend the resumption of the current instantaneous*- then at leisure he opens the hon and replaces the (leed fuse without danger to hims i ln the construction illustrated en Sh ,et l, an insulating shaft l is joui-nailed in hem*n ings il in the' iop z5 and.' ettore Z: of the bei: l, and one of its ends is extended and en ries e lmo'h or handle 3 by whieh sz' 'Cl may he rotated "ithont opening theV door fili. The shaft heldA in its jovrnszls lo suitable ineens suoli is its extremities, "nd h toni of the box the insulating` plete i wi with or attached to the may be made in the' 'form el two or stub-shafts projecting upward wurd from seid plate. lhc nel sien or length of this plete is less there height of the hex h tween its top enel for a purpose to app i below, und i' eral dimensiones' wintli el? this plete.' preference about that of the interior rn. the box so that when it stands heiress the es as seen in lig. 3 rear halt e? hor: into which leed the e li' shut olf from the for. the opeintoi move and replace 'the of the bon 'with per sn y, lasagnes impossible to come int-o Contact with any the live conneetio within the resi: half.

@ne of the wil f. connected with the lense of sie. nime l0, :ind the other with n 'lower foilL his of @zich of said forks heilig Drtternhlfv n l ll, the I (le of spring metal :is usual. (ln eheh tace of the plete 5 near its opper :nul lower ends au minted eonnectoi's which n; eheh other. yand euch connector is of metal, suitably seffured to the Platt 5 es et i2, uerrying e forli 13 nt one extremity within which one terminal, T of the fuse F is slipped as shown, and its body 14. thence led inwind townrd the trans e center of lthe plate, then tonni-d the trunnion, and finally carried outward into al blade 15 so disposed that it will-pass between the arms of one of the forks l0 or 1l. ln onder to effect this disposition oi the blades, the letter intist 'stand shove the; 'upper nml lower edges of the plate 5, so that when spaced from the top and bottom the shaft is turned and the plate changes itspposition its upper edge swings beneath the upper fork 10 and its lower edge above the lower fork 1l, and the blades 15 at one side of said plate pass out of engagement with the line-forks and around to the front side of the plate 5,(while the opposite pair of bladesv l5 pass round into engagement with the `line-forks so as to reestablish the circuit. Meanwhile the burnt-out fuse F which formerly stood behind the plate 5 is also brought around in front of it, and can be removed through the door D in a manner already described. Thus it will be seen' that bythe construction of my. invention dn.- scribed the o erator is absolutely protected from possibi ity of electric shock, and extremely unlikely to be injured because his hand is uite remote from the point. of danger. lido not wish to be limited to any particular type of fuse, and ofcourse the sizes and proportions of parts are not essential to the successful operation of the invention.

What is claimed as new is:

1. The combination with a casing, an upright shaft rotatably mounted therein and carrying an insulating plate of a size to fit4 transverSalywithinv -said casing, and means for turning the shaft' and plate; of a pair of line wires, a pair of forks within the casing connected with said wires, a pair oi connectors secured to each face of the plate and adapted .to be thrown into connection with the line wire forks by the turning o? said plate, and fuses connecting the rr., nh' of each pair of connectors.

2. The combination with a casing having an open front, an upright shaft ro....tab ,f mounted therein and carryingan insulating plate of a size to .tit transversely within said casing and whose upper and lower ends are thereof ideama '1 respectively, means for turningwsziid sha ft end plate, and a pair of fuses; of a panof line wires led through the rear of the casing, a pair of forks connected with their In a fuse box cutout, the combination with a box-like casing having a door 11n its' front and journals in its t0 y p and botto1'n`,'4 the line wires led through the rear of the box, and terminal members respectively connected with them and carried by the i and bottom ofthe box; of a plate of in ulating materiai of less length than the internal height of ing with the widtirof the centers of its upper and lower jecting through g said trunnions holding theplatc centered between the top and bottom of the box, a haneuds proand for each fuse a pair of connectors of'\L- shape whereof one arm det-.reliably recei the bored terminal of the fuse and the other arm, projects beyond theend of said insulat` ing plate and is adapted to make Contact with a wiretermnal, for the purpose sot forth. i

in t stimony whereof i have hereunto am" my ,id in presence oi' two subscrib witnesses.

EARL J. (l l {5P-H. i'fignesses: v y

.PAUL R. Girar, Bonner D. Hammer.

the box and of a Width correspondthe box,` trunnions at' said journals, pins through i die on the lower trunnifms a pair oi fuset;v 

